Dec, I9IS-] Townsend: New Muscoidea. 229 



edge of second genital segment set with short spines. Ventral plate 

 three with thick brush of shorter sharp bristle-like spines; those of 

 two and five being long and hairlike as in Fahriciclla, but more thickly 

 set. Claws nearly or quite twice as long as last tarsal joint. 



Upodemocera robinsoni new species. 



Length of body, 16.5 mm.; of wing, 12.5 mm. One male, Yellowstone 

 Park, July 17, 1907 (W. Robinson). 



Head very pale golden pollinose. Facial plate pale honey-yellow. Anten- 

 nae blackish or brown, except the reddish articulations. Palpi fulvorufous. 

 Frontalia reddish-brown. Parafrontals shining black on inside edge, vertex 

 and ocellar area same. Thorax black, shining, with only the faintest sign of 

 bloom in oblique light. Scutellum pale testaceous. Abdomen shining blackish, 

 broadly obscure deep rufous on sides of second and third segments. Legs 

 black. Pulvilli same shade as epistoma. Claws about shade of palpi, tips 

 black. Wings nearly clear, pale yellow at base, veins deep yellow. Tegulse 

 pale yellowish, the front scale more whitish. 



Holotype, No. 19571 \J. S. N. M. 



Named in honor of Mr. W. Robinson. 



PALPOTACHINA new genus. 



Genotype, Palpotachlna similis Townsend new species. 



General form and appearance of Pcletcria; but, though belonging 

 in a distinct group, the genotype approximates more nearly the head 

 characters and coloration type of Protodejcania hystricosa, from 

 which genus Palpotachina may be distinguished by the following 

 characters: Male only described. Proboscis and palpi practically 

 same, though both may run a little shorter. Cheeks not so wide, only 

 a little over one half eye height. Epistoma not quite so produced. 

 Frontalia wider, averaging quite one third of frontal width. Third 

 antennal joint moderately broad, about same length as second, straight 

 on front edge, truncate at tip but corners not angular. Frontal and 

 all head macrochsetas a little stronger, Scutellum with two long heavy 

 laterals, a shorter decussate apical pair, a still shorter discal sep- 

 arated pair, these all curved and subappressed ; a subapical approxi- 

 mated pair, erect, spinelike but not heavy; also a few short straight 

 ones on disk. Abdomen not broadened, slightly wider than thorax, 

 Peleteria-like. Second segment bearing a median marginal strong 

 erect pair of macrochsetse, with two short erect ones between them 

 and slightly nearer margin. Third segment bearing submarginal row 



